There are celestial systems in the universe from small to large, and from small to large celestial s

The celestial system in the universe is a hierarchical structure, starting from the smallest planet to the largest universe, which forms a system according to size and hierarchy. Specifically, starting with the smallest planet, in that order:

1.Planets: including Earth, Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto, etc.

2.Stars: including the sun, thousands of stars.

3.Milky Way: Composed of the Sun and thousands of stars.

4.Extragalactic galaxies: Celestial systems on the scale of the Milky Way.

5.Total galaxies: All celestial systems including the Milky Way and extragalactic galaxies.

6.Universe: Contains all celestial systems, including total galaxies and unknown universes.

These celestial systems form a complete model of the universe in terms of size and hierarchy, providing us with a preliminary understanding of the structure and evolution of the universe.

Total galaxies - extragalactic galaxies and galaxies - solar system - Earth-Moon system universe (total galaxies) - Milky Way ) - solar system ) - Earth-Moon system - other planetary systems).

Solar system -- other star systems).

Milky Way - Extragalactic galaxy).

In order from smallest to largest, as follows: Meteorite (meteorite) Moon.

Satellites) Earth-Moon System (Planets) Solar System.

Stars) Orion (nebula) Milky Way (galaxy) Virgo Supercluster (star field) Inner Universe Outer Universe ......

Celestial systems in the universe from small to large. Meteorites (comets) Dwarf planets Planets Stars Nebulae Black holes (mostly larger than stars) Galaxies Group of galaxies (e.g. local group of galaxies) Supercluster of galaxies Observable universe (93 billion light years) Universe (infinite expansion).

a. The universe is a hierarchical system of celestial structure, all stars are in motion, and stars are not absolutely immobile, so A is wrong;

b. The essence of frictional electricity is the transfer of electrons from one object to another, so that the two objects have different charges, so B is correct;

c. In the microscopic pin lifter, the arrangement of the spatial scale from small to large is: electron, nucleus, atom, molecule, the statement in the option is reversed, so the statement c is wrong;

D. Solids are difficult to compress because of the repulsion between molecules, not gravity, so D is wrong

Therefore, choose B

In the celestial structure system of the universe, the celestial hierarchy is arranged in order from small to large, as follows: meteorite (meteorite) lunar sparrow (satellite) Earth-Moon system (planet) Solar system (star) Orion (nebula) Missing Milky Way (galaxy) Virgo supercluster (star field) Inner Universe Outer universe ......

The most basic celestial bodies, stars, and nebulae in the universe. The details are as follows:

Celestial bodies are the forms of matter that exist in the universe, including stars, nebulae, planets, asteroids, moons, comets, meteoroids, interplanetary matter, interstellar matter, etc., among which the most basic celestial bodies are stars and nebulae.

Stars are spherical objects made up of hot gas that emit light on their own. Nebulae are celestial bodies made up of gas and dust with a cloudy appearance.

Judging whether a substance is a celestial body can be summarized by "three looks":

1) One is to see if it is the existence form of matter in the universe, although interstellar matter is invisible to the naked eye, it is a celestial body;

2) the second is to see whether it is a matter in the universe, and a certain part of the celestial body is not a celestial body;

3) The third is to see whether it is located in the earth's atmosphere, the celestial body located in outer space, and the celestial body located in the earth's atmosphere.

The above content reference: Encyclopedia - Celestial Bodies.

The Sun is the main star in the solar system, and it is also the largest star hereJupiter, as the largest planet in the solar system, is only one-thousandth the volume of the sun, and our earth is even smaller than the sun like a speck of dust.

The data shows that the volume of the sun is 1,300,000 times that of the earth, and the mass is 330,000 times that of the earth, human beings are small enough for the earth, but I didn't expect the earth to be so worthless in front of the sun, but in fact, as a star, this volume and mass are not outstanding, there are many stars in the universe that are much larger than the sun, and the constellation Uy is one of the largest stars known at present, it was discovered by German astronomers in 1860 that it is located in the constellation Shield, about 9500 light-years from the earth.

Uy Shieldus is already in the state of a red supergiant, light around it, it takes more than nine hours to walk around it, its radius is 1708 times that of the Earth, and the overall volume is close to twice that of the Sun, if it is placed in the position of the Sun, its photosphere will at least engulf the orbit of Jupiter, and even close to the orbit of Saturn, which means that at least five of the eight planets in the solar system will be swallowed by it, and our Sun will become a red giant star one day in the future, with a radius of 200 times the current volume, It has expanded to tens of millions of times to the present, and the photosphere can swallow up the Earth's orbit, but although the size of the Shield Constellation Uy is huge, its mass is not outstanding in comparison, only seven to 10 times the mass of the Sun, and the reason is because it is already in the state of a red supergiant.

Red supergiants are what are well-known stars that have a lifespan. At the moment when it is on the verge of death, because the change in the internal structure at this time causes the volume of the star to gradually expand. In the process, it becomes a red giant or a red supergiant that is larger than a red giant.

But in the huge process, its mass and gravity will be partially lost, relatively speaking, a star in the red supergiant stage, the duration is only hundreds of thousands, millions of years, perhaps for human beings, even only 100,000 years is a very long time, but for the life of stars on tens of billions of years, hundreds of thousands of years may be just a flick of a finger, when this stage has passed, most stars will develop into Wolfraeje stars, Wolfraye stars may evolve and finally become a black hole.

The celestial system is a collective term for the galaxies of the universe. The celestial bodies in the universe are all in motion, and the moving celestial bodies attract and orbit each other, thus forming a celestial system. Gravitation and the eternal motion of celestial bodies maintain the relationship between them, forming a multi-level celestial system.

There are different levels of celestial systems, from lowest to highest, such as the Earth-Moon System, the Solar System, the Milky Way, and the Total Galaxy.

The Motion of the Universe Radical Closure and Laminar Leakage Frontal Dislike Minor - Celestial Systems.

1) Motion: The celestial bodies in the universe are all moving, they attract each other and orbit each other, forming different levels of celestial systems.

2) Hierarchical: The celestial system as currently known is divided into four levels, as shown in the figure below

Metagalaxy.

What does the celestial system emphasize about the nature of the universe? The celestial system is a very large and infinite space, and each planet orbiting in the state wheel celestial body repels each other, and attracts each other, each in its own orbit.